In situ unsaturated permeability test apparatus

摘要

PROBLEM TO BE SOLVED: To provide an in-situ soaking test apparatus for unsaturated soil of a simple configuration capable of soaking water smoothly to a predetermined depth of soil in an unsaturated region, thereby allowing data for clarifying penetration characteristics of the soil in the unsaturated region efficiently.SOLUTION: An in-situ soaking test apparatus for unsaturated soil is for obtaining data on water content ratio of soil in an unsaturated region, and includes: a watertight water injection lid 11 of a protruded form having an opening surface on an undersurface, installed on a ground surface 30a with a tightly adhering material 17 laid in between, the watertight water injection lid having an outer peripheral part adhered to be watertight; a soil moisture meter 12 having a plurality of moisture sensors 12a, extending downward from a central part of the watertight water injection lid 11 and inserted and installed in the ground; and a feed water pump 15 communicating with inside of the watertight water injection lid 11 via a feed pipe 13 and a return pipe 14, the feed water pump supplying pressurized water into the watertight water injection lid 11, while keeping the water tight water injection lid 11 filled with pressurized water and circulating pressurized water between the feed water pump and a feed water tank 16.SELECTED DRAWING: Figure 1